Geant4 Cross Reference

Cross-Referencing   Geant4
Geant4/processes/cuts/src/G4RToEConvForPositron.cc

Version: [ ReleaseNotes ] [ 1.0 ] [ 1.1 ] [ 2.0 ] [ 3.0 ] [ 3.1 ] [ 3.2 ] [ 4.0 ] [ 4.0.p1 ] [ 4.0.p2 ] [ 4.1 ] [ 4.1.p1 ] [ 5.0 ] [ 5.0.p1 ] [ 5.1 ] [ 5.1.p1 ] [ 5.2 ] [ 5.2.p1 ] [ 5.2.p2 ] [ 6.0 ] [ 6.0.p1 ] [ 6.1 ] [ 6.2 ] [ 6.2.p1 ] [ 6.2.p2 ] [ 7.0 ] [ 7.0.p1 ] [ 7.1 ] [ 7.1.p1 ] [ 8.0 ] [ 8.0.p1 ] [ 8.1 ] [ 8.1.p1 ] [ 8.1.p2 ] [ 8.2 ] [ 8.2.p1 ] [ 8.3 ] [ 8.3.p1 ] [ 8.3.p2 ] [ 9.0 ] [ 9.0.p1 ] [ 9.0.p2 ] [ 9.1 ] [ 9.1.p1 ] [ 9.1.p2 ] [ 9.1.p3 ] [ 9.2 ] [ 9.2.p1 ] [ 9.2.p2 ] [ 9.2.p3 ] [ 9.2.p4 ] [ 9.3 ] [ 9.3.p1 ] [ 9.3.p2 ] [ 9.4 ] [ 9.4.p1 ] [ 9.4.p2 ] [ 9.4.p3 ] [ 9.4.p4 ] [ 9.5 ] [ 9.5.p1 ] [ 9.5.p2 ] [ 9.6 ] [ 9.6.p1 ] [ 9.6.p2 ] [ 9.6.p3 ] [ 9.6.p4 ] [ 10.0 ] [ 10.0.p1 ] [ 10.0.p2 ] [ 10.0.p3 ] [ 10.0.p4 ] [ 10.1 ] [ 10.1.p1 ] [ 10.1.p2 ] [ 10.1.p3 ] [ 10.2 ] [ 10.2.p1 ] [ 10.2.p2 ] [ 10.2.p3 ] [ 10.3 ] [ 10.3.p1 ] [ 10.3.p2 ] [ 10.3.p3 ] [ 10.4 ] [ 10.4.p1 ] [ 10.4.p2 ] [ 10.4.p3 ] [ 10.5 ] [ 10.5.p1 ] [ 10.6 ] [ 10.6.p1 ] [ 10.6.p2 ] [ 10.6.p3 ] [ 10.7 ] [ 10.7.p1 ] [ 10.7.p2 ] [ 10.7.p3 ] [ 10.7.p4 ] [ 11.0 ] [ 11.0.p1 ] [ 11.0.p2 ] [ 11.0.p3, ] [ 11.0.p4 ] [ 11.1 ] [ 11.1.1 ] [ 11.1.2 ] [ 11.1.3 ] [ 11.2 ] [ 11.2.1 ] [ 11.2.2 ] [ 11.3.0 ]

Diff markup

Differences between /processes/cuts/src/G4RToEConvForPositron.cc (Version 11.3.0) and /processes/cuts/src/G4RToEConvForPositron.cc (Version 5.1.p1)


  1 //                                                  1 
  2 // *******************************************    
  3 // * License and Disclaimer                       
  4 // *                                              
  5 // * The  Geant4 software  is  copyright of th    
  6 // * the Geant4 Collaboration.  It is provided    
  7 // * conditions of the Geant4 Software License    
  8 // * LICENSE and available at  http://cern.ch/    
  9 // * include a list of copyright holders.         
 10 // *                                              
 11 // * Neither the authors of this software syst    
 12 // * institutes,nor the agencies providing fin    
 13 // * work  make  any representation or  warran    
 14 // * regarding  this  software system or assum    
 15 // * use.  Please see the license in the file     
 16 // * for the full disclaimer and the limitatio    
 17 // *                                              
 18 // * This  code  implementation is the result     
 19 // * technical work of the GEANT4 collaboratio    
 20 // * By using,  copying,  modifying or  distri    
 21 // * any work based  on the software)  you  ag    
 22 // * use  in  resulting  scientific  publicati    
 23 // * acceptance of all terms of the Geant4 Sof    
 24 // *******************************************    
 25 //                                                
 26 // G4RToEConvForPositron class implementation     
 27 //                                                
 28 // Author: H.Kurashige, 05 October 2002 - Firs    
 29 // -------------------------------------------    
 30                                                   
 31 #include "G4RToEConvForPositron.hh"               
 32 #include "G4ParticleDefinition.hh"                
 33 #include "G4ParticleTable.hh"                     
 34                                                   
 35 #include "G4PhysicalConstants.hh"                 
 36 #include "G4SystemOfUnits.hh"                     
 37 #include "G4Pow.hh"                               
 38 #include "G4Log.hh"                               
 39 #include "G4Exp.hh"                               
 40                                                   
 41 // -------------------------------------------    
 42 G4RToEConvForPositron::G4RToEConvForPositron()    
 43   : G4VRangeToEnergyConverter()                   
 44 {                                                 
 45   theParticle = G4ParticleTable::GetParticleTa    
 46   if (theParticle == nullptr)                     
 47   {                                               
 48 #ifdef G4VERBOSE                                  
 49     if (GetVerboseLevel()>0)                      
 50     {                                             
 51       G4cout << "G4RToEConvForPositron::G4RToE    
 52       G4cout << "Positron is not defined !!" <    
 53     }                                             
 54 #endif                                            
 55   }                                               
 56   else                                            
 57   {                                               
 58     fPDG = theParticle->GetPDGEncoding();         
 59   }                                               
 60 }                                                 
 61                                                   
 62 // -------------------------------------------    
 63 G4RToEConvForPositron::~G4RToEConvForPositron(    
 64 {}                                                
 65                                                   
 66 // -------------------------------------------    
 67 G4double G4RToEConvForPositron::ComputeValue(c    
 68                                              c    
 69 {                                                 
 70   const G4double cbr1=0.02, cbr2=-5.7e-5, cbr3    
 71   const G4double Tlow=10.*CLHEP::keV, Thigh=1.    
 72   const G4double taul = Tlow/CLHEP::electron_m    
 73   const G4double logtaul = G4Log(taul);           
 74   const G4double taul12 = std::sqrt(taul);        
 75   const G4double bremfactor = 0.1;                
 76                                                   
 77   G4double Zlog = G4Pow::GetInstance()->logZ(Z    
 78   G4double ionpot =                               
 79     1.6e-5*CLHEP::MeV*G4Exp(0.9*Zlog)/CLHEP::e    
 80   G4double ionpotlog = G4Log(ionpot);             
 81                                                   
 82   G4double tau = kinEnergy/CLHEP::electron_mas    
 83   G4double dEdx = 0.0;                            
 84                                                   
 85                                                   
 86   if(tau<taul)                                    
 87   {                                               
 88     G4double t1 = taul+1.;                        
 89     G4double t2 = taul+2.;                        
 90     G4double tsq = taul*taul;                     
 91     G4double beta2 = taul*t2/(t1*t1);             
 92     G4double f = 2.*logtaul -                     
 93       (6.*taul+1.5*tsq-taul*(1.-tsq/3.)/t2        
 94        -tsq*(0.5-tsq/12.)/(t2*t2))/(t1*t1);       
 95     dEdx = (G4Log(2.*taul+4.)-2.*ionpotlog+f)/    
 96     dEdx *= Z*taul12/std::sqrt(tau);              
 97   }                                               
 98   else                                            
 99   {                                               
100     G4double t1 = tau+1.;                         
101     G4double t2 = tau+2.;                         
102     G4double tsq = tau*tau;                       
103     G4double beta2 = tau*t2/(t1*t1);              
104     G4double f = 2.*G4Log(tau) - (6.*tau+1.5*t    
105        -tsq*(0.5-tsq/12.)/(t2*t2))/(t1*t1);       
106     dEdx = Z*(G4Log(2.*tau+4.)-2.*ionpotlog+f)    
107                                                   
108     // loss from bremsstrahlung follows           
109     G4double cbrem = (cbr1+cbr2*Z)                
110                    * (cbr3+cbr4*G4Log(kinEnerg    
111     dEdx += cbrem*Z*(Z+1.)*bremfactor*tau/beta    
112   }                                               
113   return dEdx*CLHEP::twopi_mc2_rcl2;              
114 }                                                 
115                                                   
116 // -------------------------------------------    
117